Home / 678,311.71-936,081.14-372,416.29

Finding the Fourth Proportional to 678,311.71, 936,081.14 and 372,416.29

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Solution

The fourth proportional to 678,311.71, 936,081.14 and 372,416.29 is: 513,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,311.71 : 936,081.14 = 372,416.29 : x
  2. Step 2: Convert to fraction form
    678,311.71/936,081.14 = 372,416.29/x
  3. Step 3: Cross multiply
    678,311.71x = 936,081.14 × 372,416.29
  4. Step 4: Simplify right side
    678,311.71x = 348,611,861,095.49
  5. Step 5: Solve for x
    x = 348,611,861,095.49/678,311.71
  6. Step 6: Final answer
    x = 513,940.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.